1. Department of Respiratory Medicine; The First Hospital of Jilin University; Changchun China
2. Key Laboratory of Zoonosis; Ministry of Education; Institute of Zoonosis; College of Veterinary Medicine; Jilin University; Changchun China
3. Tianjin International Travel Healthcare Center; Tianjin China
4. Heilongjiang Veterinary Drug and Feed Super Vision Institute; Haerbin China